The Homo Sapiens is handmade from hardened basaltic lava sourced from the Mount Etna volcano in Italy. Visconti lava is ultra strong, comfortable and warm to the touch - and slightly hygroscopic, absorbing moisture from your hand. The pen caps using the Visconti 'Hook Safe Lock', a revolutionary capping system so you can cap a pen without worrying about the cap accidentally unscrewing in your pocket and leaking. The fountain pen's vacuum power filler is made of titanium to resist ink corrosion, and features a two-tone 23k palladium nib.